Men have a biological clock too

A broad study of couples seeking fertility help has shown that men are not immune from the ticking of the biological clock: They become less fertile after the age of 35. Researchers at a French fertility clinic studied over 12,000 couples who sought treatment at the clinic, and found that older men were less likely to conceive a child with their partners, and were more likely to conceive a child that ultimately miscarried 

 Link to : Discover Magazine ro read more